Finding the Fourth Proportional to 118,338.66, 163,308.69 and 64,624.32

Step by Step Solution

1. Step 1: Write the proportion equation
   118,338.66 : 163,308.69 = 64,624.32 : x
2. Step 2: Convert to fraction form
   118,338.66/163,308.69 = 64,624.32/x
3. Step 3: Cross multiply
   118,338.66x = 163,308.69 × 64,624.32
4. Step 4: Simplify right side
   118,338.66x = 10,553,713,041.34
5. Step 5: Solve for x
   x = 10,553,713,041.34/118,338.66
6. Step 6: Final answer
   x = 89,182.29